Say how far each axis runs

Records the extent of one or more axes, keyed by axis role — the height of the video frame for y, its width for x. Roles not named keep the extent they had.

The extent is what set_axis_directions() reflects around when an axis is turned over: new = extent - old.

Usage

set_axis_extents(data, extents)

Arguments

data

An aniframe object.

extents

Named numeric vector, axis role to extent. Each must be positive and finite; NA clears an axis.

Value

The aniframe with updated axis_extents metadata.

See also

get_axis_extents(), set_axis_directions()

Examples

af <- example_aniframe(n_obs = 3, n_individuals = 1, n_keypoints = 1)
af <- set_axis_extents(af, c(x = 1920, y = 1080))
get_axis_extents(af)
#>    x    y 
#> 1920 1080